Surfacing-machine.



No. 890,312. PAYTENTED JUNE 9, 1908.

J. F. STOLLQ SURFA OING MACHINE. APPLICATION FILED MAR.6.1908.

3 SHEETS-SHEET 2.

WITNESSES mm? W rm: NORRIS PEIEIS 60., wnsnmcrou, n. c. v

No. 890,312. PATENTED JUNE 9, 1 908.

' J. ,F. STOLL.

SURFAGING MACHINE.

APPLICATION FILED MAR-6,1908.

3 SHEETS-SHEBT 3.

66 I 5 72 n F1g.-7

WITNESSES INVEN'I'OR g5 W 7%. 575 KM.

ATTORNEY- 7N! NORRIS PETERS co.. wAsnmcnlv, 0. c4

JOHN F. STOLL, OF GUYAHOGA FALLS, OHIO.

SUBFAOING- MACHINE.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed March 6, 1908. Serial No. 419,554.

To all whom it may concern:

Be it known that I, J OHN F. SroLL, a'citizen of the United States, residing at Guyahoga Falls, in the county of Summit and State of Ohio, have invented new and useful Improvements in Surfacing Machines, of which the following is a specification.

This invention relates to surfacing machines especially adapted for use on bowling alleys.

The object of this invention is to construct a machine for truing and removing the upper surfaces of such structures as floors, bowling alleys, etc.

The invention Particularly contemplates providing a machine to be used for repairing and dressing bowling alleys which have become worn and uneven by reason of use and in order to carry out this object the device is equipped with means to cut away a sufficient portion of the upper surface of the alley to obliterate the dents and marred places produced by the use of the balls as well as removing all varnish and dressings which have been applied to the surface thereof in preparing it for use.

A still further object is to produce a machine which will be simple in construction, strong, durable, efficient in use, easily set up and manipulated and one by which the removal of the upper surface of a bowling alley and the truing thereof may be accomplished in an expeditious and approximately perfect manner.

Other advantages constituting objects of this invention will more fully appear in the subjoined description.

A practical embodiment of my invention is illustrated in the accompanying drawings in which similar reference numerals indicate like parts in the different figures.

Referring to the drawings: Figure 1 is a view in elevation looking from the rear of the machine. Fig. 2 is a plan view of the rear portion of the device. Fig. 3 is a View in side elevation, and, Figs. 4, 5, 6 and 7 detailed views of various portions hereinafter described.

Referring to the drawings in detail, the reference numeral 1 denotes a bowling alley provided with the usual gutters 2, 2, having upwardly-extending sides 3, 3, of the ordinary construction.

Adapted to run on the alley 1 is a self-propelled truck 4 provided with front wheels 5 connected by an axle 6 mounted in brackets 7 and bearing a worm wheel 8 intermediate the ground wheels 5. Revolubly mounted in a vertical bearing 9 is a shaft 10 bearing on its lower end a worm 11 intermeshing with the worm wheel 8. The upper end of the shaft 10 bears a beveled gear 12 arranged to mesh with a pinion gear 13 on one end of an armature shaft 14 of a motor 15. The rear end of the truck 4 is supported by ground wheels 16 on an axle 17 supported by brackets 18.

Mounted on the rear end of the truck 4 by means of bolts 19 is a frame 20 provided with depending sides 21 on each of which and oppositely-disposed with respect to one another is a plate 22 extending laterally from which is a socket 23 designed to receive an arm 24 secured against movement by a set screw 25 and bearing at its outer end a guide roller 26. After positioning the truck on the bowling alley the arms 24 will be extended laterally until the rollers 26 engage the sides 3 of the alley and the truck will be guided in its movement thereby.

Mounted on the armature shaft 14 is a gear 27 meshing into aigear 28 on a horizontal shaft 29 mounted parallel with the armature shaft 14 in an upright hanger 3O positioned on the upper face of the frame 20. On the rear end of the shaft 29 is fixedly secured a double crank 31, to the oppositelydisposed wrist pins of which are pivoted connecting rods 32 the outer ends of which are pivotally connected to the upper ends of the rocking arms 33 mounted on shafts 34 revolubly mounted in journal boxes 35 bolted to the upper opposite lateral faces of the frame 20. Mounted on the opposite ends of the shafts 34 are depending rocking arms 36 for a purpose to be stated.

In the rear portion 38 of the frame 20 are formed a pair of vertical guides 37 in which are mounted the lower depending ends of a vertically-shiftable yoke 39 united by an upwardly-extending horizontal integral arm 40 provided with a centrally-placed enlarged boss 41 in which is mounted an adjusting screw 42 having a squared upper end 44 and collars 43 provided with a threaded lower end for engagement with an internally-threaded boss 46 disposed on the rear face 38 of the frame 20. The adjusting screw 42 is employed for raising and lowering the yoke by means of the engagement of the screw 42 in the threads in the boss 46.

The mechanism for operating on the surface of the bowling alley is supported by the yoke 39 and consists of an elongated transversely-arranged carrier 47 provided with two upwardly-extending standards 48 and 49 secured to the lower depending arms of the yoke 39 in the following manner: Extending through the standard 48 and secured in one arm of the yoke 39 is a pivot bolt 50 and above this is a clamping bolt 51 for locking the carrier 47 in position when in place and the proper adjustment made. The standard 49 is providedwith a curved. slot 52 the axis of which is the pivot bolt 50. EX- tending through the slot 52 are two set screws 53 for securing the standards 49 tightly against the corresponding arm of the j with collars 57 to prevent shifting of the screw with respect to the boss, and is further provided at its upper end with a squared port1on 58 to recelve a mampulating wrench.

The carrier 47 consists of an upper mem ber 59 formed integral with the standards 48 and 49 and supported thereby and a lower complementary member 60. Extending longitudinally of the members 59 and 60 and formed in the abutting faces thereof are two parallel guide ways in one of which is mounted a carrier head 61 and in the other a similar head'62 both of which consist of elongated flanged plates shaped to fit in said guide ways and be slidable therein. The carrier head 62 is provided with an upwardly-extending standard 63 which passes through and is freely slidable in a slot 78 formed in the member 59 and is pivotally connected with one of the arms 36 by means of a link 79. Depending from the head 62 through suitable slots in the member 60 are a plurality of bosses 64 to the lower ends of which is secured a saw 65 by means of bolts 66. The saw 65 is thicker at the front than at the rear face in order to give sufficient clearance to permit the easy operation thereof and is further provided in its front face with a plurality of teeth formed approximately as shown in Fig. 5 but without any set being imparted thereto.

The carrier head 61 is provided with an upwardly-extending standard 76 which re ciprocates in a slot 77 formed therefor in the member 59 and its upper end is pivotally connected with one of the arms 36 by means of a link 80. Depending from the head 61 through suitable slots in the member 60 are a plurality of bosses 68 having secured to their lower ends by means of bolts 69 a planer comprising a body portion 70 from which depends inclined lugs 71 having openings therein to receive the shanks of cutting tools 72 held in position by set screws 73. The lugs 71 arestrengthened by means of a web 74 and the tools can be adjustably held by manipulating the set screws 7 3.

Secured on the outer ends of the members 59 and 60 are covers 75 for preventing the entrance of dust to the guide ways in the carrier 47 and also to assist in maintaining the two members 59 and 60 in operative relation with each other. i

In setting up for operation a device such as has just been described the truck is first placed on the bowling alley and the arms 24 extended until the rollers 26 engage the sides 3 of the alley and the arms are then securedagainst movement by means of the set screws 25. The set screws 51 and 53 which hold the carrier 47 from movement are loosened and the carrier brought to a true horizontal plane which may be easily determined by means of a spirit level or other suitable device. The set screws 51 and 53 are then tightened and the yoke 39 lowered by manipulating the adjusting screw 42 until the cutting tools supported by the carrier 47 are in operative engagement with the upper surface of the bowling alley 1. Power is then communicated to the motor 15 which causes it to rotate the worm 11 which connecting with the worm wheel 8 rotates the shaft 6 on which are the ground wheels 5 which propel the truck forward slowly along the upper surface of the alley. At the same time the gear 27 on the armature shaft re- T volves the gear 28 mounted on the shaft 29 in the upright hanger 30 causing the revolution of the double crank 31 and the simultaneous motion of the links 32 and rocking arms 33. through the shafts 34 to the depending arms 36 and is in turn conveyed from them to the carrier heads 61 and 62 of the carrier 47 by means of the links 79 and 80. The motion of the carrier heads is a transverse reciproi eating motion which causes the saw 65 to cut away a portion of the upper surface of the alley commensurate with the amount of pressure imparted thereto which is followed by the smoothing of the cut of the saw by means of the planer teeth.

If it is necessary at any time to increase the cut made by the tools it is easily accomplished by manipulating the adjusting screw 42 which will force the tools into the material of the bowling alley with greater force, and if for any reason the portion of the bowling alley on which the truck stands'is not in a horizontal plane the carrier 47 may be ad- This motion is communicated" justed to cut in a perfectly true plane by for propelling it, a frame depending from the end of said truck, a bearing secured to the frame, a horizontal shaft in said bearing, a

crank carried by said shaft, a link connected whereby motion is communicated to said surfacing tool.

2. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame depending from the end of said truck, a bearing secured to said frame, a horizontal shaft mounted in said bearing connected with said propelling means, a yoke mounted for vertical movement on the rear face of said frame, a carrier mounted on said yoke movable therewith, a surfacing tool carrying head mounted in said carrier arranged to reciprocate transversely with respect to the truck, and means for conveying motion from said shaft to said carrier head.

3. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame provided with guideways on said truck, a bearing secured to said frame, a horizontal shaft mounted in said bearing in saidframe, a yoke mounted in said guideways, means for vertically adjusting said yoke, a carrier secured on said yoke, a carrier head provided with a surfacing tool mounted for transverse reciprocal motion in said carrier, and means for communicating motion from said shaft to said carrier head.

4. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame depending from the end of said truck, a bearing secured to said frame, a horizontal shaft mounted in said bearing, guideways formed in said frame, a vertically-shiftable yoke mounted in said guideways, a carrier pivotally secured on said yoke, a carrier head provided with a surfacing tool mounted for transverse reciprocal motion in said carrier, and means for communicating motion from said shaft to said carrier head.

5. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame provided with guideways depending from the end of said truck, a bearing secured to said frame, a horizontal shaft mounted in said bearing, a vertically-shiftable yoke provided with depending arms mounted in said guideways, a

carrier pivoted on one of the arms of said yoke, an adjusting screw carried by said frame engaging said yoke for vertically adjusting the same, a carrier pivoted on one of the arms of said yoke, adjusting means connecting the other arm of said yoke with said carrier, and a carrier head provided with a surfacing tool mounted for transverse reciprocal motion in said carrier, and means for communicating motion from said shaft to said carrier head.

6. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame provided with guideways depending from the end of said truck, a bearing secured to said frame, a horizontal shaft mounted in said bearing, a vertically-shiftable yoke provided with de pending arms mounted in said guideways, a carrier pivoted on one of the arms of said yoke, an adjusting screw secured to said carrier, means on said yoke receiving said adjusting screw whereby the position of said carrier with respect to said yoke may be varied, a carrier head mounted for transverse reciprocal motion in said carrier, and means for communicating motion from said shaft to said carrier head.

7. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame provided with guideways depending therefrom, a bearing mounted on said frame, a shaft mounted in said bearing, a vertically-shiftable yoke mounted in said guideways, means for adjusting the position of said yoke, a carrier pivotally secured to said yoke, means for varying the inclination of said carrier With respect to said yoke, said carrier provided with longitudinal guideways formed therein, carrier heads each provided with surfacing tools mounted in said guideways, and means for simultaneously communicating motion from said shaft to said carrier heads.

8. A self-propelled surfacing machine comprising a truck, means carried by the truck for propelling it, a frame provided with an upwardly-extending guiding means mounted on said truck, a bearing on said frame, a horizontal shaft in said bearing, a vertical adjustable member mounted in said guiding means, a carrier secured onsaid member, a carrier-head provided with a surfacing tool mounted for transverse reciprocal motion in said carrier, and means for communicating motion from said shaft to said carrier-head.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN F. STOLL. Witnesses:

O. E. HUMPHREY, GLENARA FOX. 

